Author: Hobson George BullmanPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Development of a Position Sensitive Atom Detector for Helium-surface Scattering
Author: Hobson George BullmanA High Sensitivity Detector for Helium Atom Scattering
Author: David Matthew ChisnallHelium Atom Scattering from Surfaces
Author: E. HulpkePublisher: Springer Science & Business Media
ISBN: 3662027747
Category : Science
Languages : en
Pages : 331
Book Description
High resolution helium atom scattering can be applied to study a number of interesting properties of solid surfaces with great sensitivity and accuracy. This book treats in detail experimental and theoretical aspects ofthis method as well as all current applications in surface science. The individual chapters - all written by experts in the field - are devoted to the investigation of surface structure, defect shapes and concentrations, the interaction potential, collective and localized surface vibrations at low energies, phase transitions and surface diffusion. Over the past decade helium atom scattering has gained widespread recognitionwithin the surface science community. Points in its favour are comprehensiveunderstanding of the scattering theory and the availability of well-tested approximation to the rigorous theory. This book will be invaluable to surface scientists wishing to make an informed judgement on the actual and potential capabilities of this technique and its results.
The Development of a Single Atomic Particle Position Sensitive Detection System
Author: William Mervyn FarrellHelium Atom Scattering from Surfaces
Author: E. HulpkePublisher: Springer
ISBN: 9783540546054
Category : Science
Languages : en
Pages : 324
Book Description
High resolution helium atom scattering can be applied to study a number of interesting properties of solid surfaces with great sensitivity and accuracy. This book treats in detail experimental and theoretical aspects ofthis method as well as all current applications in surface science. The individual chapters - all written by experts in the field - are devoted to the investigation of surface structure, defect shapes and concentrations, the interaction potential, collective and localized surface vibrations at low energies, phase transitions and surface diffusion. Over the past decade helium atom scattering has gained widespread recognitionwithin the surface science community. Points in its favour are comprehensiveunderstanding of the scattering theory and the availability of well-tested approximation to the rigorous theory. This book will be invaluable to surface scientists wishing to make an informed judgement on the actual and potential capabilities of this technique and its results.
Development of a Position and Time-sensitive Detector for Atomic Physics Experiments
Author: Si Xuan ChenPublisher:
ISBN:
Category : Position sensitive particle detectors
Languages : en
Pages : 186
Book Description
Helium Atom Scattering Investigations of Surface Structure Evolution and Vibrational Dynamics During Deposition of Phosphine and Tin on Cu (001) Surfaces
Author: Lyudmila GoncharovaIndex to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 346
Book Description
Progress Towards Helium Beam Microscopy
Author: Naomi SchofieldPublisher:
ISBN:
Category :
Languages : en
Pages : 169
Book Description
Neutral Helium atoms have significant potential for use as a probe in a matter-wave microscope. Their low energy scattering interactions with surfaces are well understood within the field of Helium Atom Scattering, where they have been shown to be sensitive to the presence of adsorbates, surface phonons and metalisation of surfaces. A focused probe of neutral Helium atoms could exploit this sensitivity and provide spatially resolved information for surfaces when scanned in two dimensions, thereby realising a Scanning Helium Microscope (SHeM). The ultimate resolution of a SHeM is set by the size of the Helium focus, and is ultimately limited by the sub-angstrom de Broglie wavelength of thermal Helium atoms.This thesis describes progress towards the demonstration of a SHeM using optical potential lenses to focus ground state neutral Helium atoms. The AC Stark effect is exploited to create an optical potential lens to focus a supersonic Helium beam. This is the first experimental demonstration of neutral Helium focusing using far off resonant fields. In addition, a high efficiency detection scheme for neutral Helium atoms (50%) using multiphoton ionisation is developed for use in SHeM. This represents a significant improvement on the very poor efficiency of electron bombardment detection schemes commonly used in Helium experiments. This detection scheme offers potentially sub-micron spatial resolution, and nanosecond temporal resolution.
Development of a One-dimensional Position Sensitive Detector for Tracking Applications
Author: Leigh Kent Lydecker (IV)Publisher:
ISBN:
Category : Position sensitive particle detectors
Languages : en
Pages : 47
Book Description